William koplin



W. KOPLIN. SPIKE MACHINE.

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Letters Patent No. 77,199, dated April 28, 1868;

IMPROVEMENT IN SPIKE-MACHINES.

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TO ALL WHOM IT MAY CON GERH:

Be it known that I, WILLIAM KOPLIN, of New Castle, Lawrence county, and State-of Pennsylvania,l.have

invented certain new and useful Improvements in Spike-Cutting Machines; and I do hereby declare the follow ing to he a full, clear, and exact description of the same, reference being bad to the accompanying drawings, which form part of this specification,

This is an improvement upon the spike-cutting machine for which Letters Patent, No. 61,214, were granted to me on the 15th day of January, 1867.

In the drawings-s- Figure 1 is a plan of so much of the machine as is necessary to illustrate my present improvements. Figure 2 represents a vertical section of the same at a: x, fig. 1.

Similar letters of reference indicate ccrresponding'parts. V

The side dies or jaws g j, cutting-pointer K, lever'mycam o, and heading-tool b, may be substantially as described in my previous patent above referred to.

My present improvements relate chiefly to the way of applying and operating the sliding knife h.

The said knife is mounted in a stock, s, pivoted to a sliding carriage, t, and furnished with a spring, a,

whichservesto'prssstheknife'ir constantlytlown upon thestationary tower die- K.

a is an arm', projecting downward from the shaft m of the lever m, to impart a backward. and forward motion to the slide it and knife k.

v is a spring, bearing against the arm at with sufiicicnt force to press the lever m upward in contact with the cam o.

The operation is as follows:

The heated bar (shown in red in fig.- 2) may be fed in upon the knife h asa guide, the header b constituting a gauge as tolcngth.

The lever m, being then pressed down by the rotation of the cum 0, severe a blank by the die K acting against the end of the'knife h. v

v This stage of the operation is reprosented in fig. 2. As the dieK continues ,to descend, the knife in recedes in a horizontal direction, until the points of the two dics meet at an acute angle, by which time the blank is tightly squeezed between their whole length, and thus receives the required form for a spike, with the exception of the head,iwhich latter is next formed by theheading-die ii, .whichis forced up by any suitable means, not necessary to describe. The dies 6 and K then recede, and the completed spike is removed.

A great advantage of my improved machine, above described, is, that by it the blank is severed from the bar while griped between the dies. g

The sliding knife fits against the point of the cutting-die as the blank is se vered, and then moves out of the way to permit the dies to complete the point which has been partially made in'the actof cutting.

By this process the points are all made with perfect uniformity, are effectually prevented from spreading, and are less liable to fire.

Having thus described my invention, what I claim as new, and desircto secure by Letters Patent, is p 1. The-cutter 7:, moving in the are of a circle, in combination with the receding cutter h, substantially as and for the purpose set forth. I

2. The combination and arrangement or the dies K K, sliding cutter It, pivoted stock a, carriage t, arm u, springs a v, lever m, and shaft m, substantially as and for the purposes described.

WILLIAM KOPLIN. Witnesses:

J. W. Barrows,

Armour Bnooxs. 

